CUET 2026 Chemistry May 18 Shift 1 Question Paper- Download Answer Key and Solution PDF

CUET 2026 May 18 Shift 1 Chemistry Question Paper is available for download here. NTA is conducting the CUET 2026 exam from 11th May to 31st May.

CUET 2026 Chemistry exam consists of 50 questions for 250 marks to be attempted in 60 minutes.
As per the marking scheme, 5 marks are awarded for each correct answer, and 1 mark is deducted for incorrect answer.

Candidates can download CUET 2026 May 18 Shift 1 Chemistry Question Paper with Answer Key and Solution PDF from links provided below.

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CUET 2026 Chemistry May 18 Shift 1 Question Paper with Solution PDF

CUET May 18 Shift 1 Chemistry Question Paper 2026	Download PDF	Check Solutions

Question 1:

The Henry's law constant (\(K_H\)) values for four gases \(W, X, Y,\) and \(Z\) in water at \(298 K\) are \(4.0 \times 10^4\), \(2.5 \times 10^{-2}\), \(1.5 \times 10^3\), and \(8.0 \times 10^1 bar\), respectively. What is the correct order of their solubility in water under the same partial pressure?

(A) \(W > Y > Z > X\)
(B) \(X > Z > Y > W\)
(C) \(X > Y > Z > W\)
(D) \(W > Z > Y > X\)

View Solution

Question 2:

Which of the following organic compounds is expected to have the highest boiling point?

(A) \(CH_3CH_2CH_2CH_2OH\)
(B) \(CH_3CH_2CH_2CHO\)
(C) \(CH_3CH_2CH_2CH_2CH_3\)
(D) \(CH_3CH_2OCH_2CH_3\)

View Solution

Question 3:

Why do aquatic species, such as fish, generally feel more comfortable in cold water than in warm water?

(A) The solubility of oxygen gas increases as the temperature of the water decreases.
(B) The solubility of oxygen gas decreases as the temperature of the water decreases.
(C) The Henry's law constant (\(K_H\)) for oxygen decreases as temperature increases.
(D) Warm water contains more dissolved toxic gases that harm aquatic metabolism.

View Solution

Question 4:

What are the starting materials used in the industrial synthesis of the pesticide DDT?

(A) Chlorobenzene and Chloroform
(B) Chlorobenzene and Chloral
(C) Benzene and Chloral
(D) Chlorobenzene and Hexachloroethane

View Solution

Question 5:

Which of the following statements is TRUE regarding the transition state of a bimolecular nucleophilic substitution (\(S_N2\)) reaction?

(A) The central carbon atom transitions to an \(sp^3\) hybridization state with a tetrahedral geometry.
(B) The central carbon atom adopts an unstable pentacoordinate arrangement with approximate \(sp^2\) hybridization.
(C) The reaction forms a stable, isolation-ready carbocation intermediate.
(D) Both the nucleophile and the leaving group carry full, non-interacting formal charges.

View Solution

Question 6:

Ethylene glycol (\(ethane-1,2-diol\)) is widely added to car radiators as an antifreeze agent. How does its addition protect the engine in extreme climates?

(A) It raises the freezing point of water and lowers its boiling point.
(B) It lowers the freezing point of water and raises its boiling point.
(C) It lowers both the freezing point and the boiling point of water equally.
(D) It reacts chemically with the metal radiator walls to reduce thermal expansion.

View Solution

Question 7:

Which of the following oxidizing agents is mild enough to selectively oxidize an aldehyde to a carboxylic acid without cleaving other sensitive carbon-carbon single bonds?

(A) Tollens' reagent
(B) Concentrated \(H_2SO_4\) at high temperatures
(C) Ozone followed by \(Zn / H_2O\)
(D) \(LiAlH_4\) in dry ether

View Solution

Question 8:

What are the primary reagents and catalysts required to carry out the Gattermann-Koch reaction?

(A) \(CO, HCl\), and anhydrous \(AlCl_3 / CuCl\)
(B) \(CHCl_3\) and aqueous \(NaOH\)
(C) \(HCN, HCl\), and anhydrous \(AlCl_3\)
(D) \(CH_3Cl\) and anhydrous \(AlCl_3\)

View Solution

Question 9:

Among the given pairs of isomeric organic compounds, which pair is correctly arranged in order of INCREASING boiling point?

(A) \(n\)-Butyl alcohol < \(t\)-Butyl alcohol
(B) \(t\)-Butyl chloride < \(n\)-Butyl chloride
(C) \(p\)-Dichlorobenzene < \(o\)-Dichlorobenzene
(D) Isopentane < Neopentane

View Solution

Question 10:

When benzaldehyde is subjected to oxidation using acidified potassium permanganate (\(KMnO_4\)), what organic product is formed?

(A) Benzyl alcohol
(B) Benzoic acid
(C) Benzene
(D) Acetophenone

View Solution

CUET UG 2026 Exam Pattern

Parameter	Details
Exam Name	Common University Entrance Test (CUET UG) 2026
Conducting Body	National Testing Agency (NTA)
Exam Mode	Computer-Based Test (CBT)
Exam Duration	60 minutes per test
Total Sections	3 (Languages, Domain Subjects, General Test)
Question Type	Multiple Choice Questions (MCQs)
Questions per Test	50 questions (all compulsory)
Marking Scheme	+5 for correct, -1 for incorrect
Maximum Marks	250 marks per test
Maximum Subject Choices	5 subjects in total
Syllabus Base	Class 12 NCERT (mainly for Domain Subjects)

CUET UG 2026 Question Paper Analysis

CUET Questions

1.
The number of stereoisomers possible for the compound \(CH_3CH(OH)CH(OH)CH_3\) is:

\(2\)
\(3\)
\(4\)
\(5\)

View Solution

2.
A first-order reaction has a half-life of 20 minutes. The time required for \(87.5%\) completion of the reaction is:

\(40\) min
\(60\) min
\(80\) min
\(100\) min

View Solution

3.
The standard Gibbs energy for the reaction is \(-212.27\,\mathrm{kJ\,mol^{-1}}\). \[ Zn(s)+Cu^{2+}(aq.) \rightarrow Zn^{2+}(aq.)+Cu(s) \] The standard electrode potential \((E^\circ_{\text{cell}})\) for the Daniell cell is:

\(1.1\text{ V}\)
\(2.2\text{ V}\)
\(0.002\text{ V}\)
\(0.001\text{ V}\)

View Solution

4.
Match Reaction with Reagent Required:
Choose the correct answer from the options given below:

(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
(A)-(I), (B)-(II), (C)-(IV), (D)-(III)
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
(A)-(III), (B)-(I), (C)-(II), (D)-(IV)

View Solution

5.
The correct order of acidic strength is: \[ CH_3COOH,\quad ClCH_2COOH,\quad Cl_2CHCOOH,\quad Cl_3CCOOH \]

\(CH_3COOH > ClCH_2COOH > Cl_2CHCOOH > Cl_3CCOOH\)
\(ClCH_2COOH > CH_3COOH > Cl_2CHCOOH > Cl_3CCOOH\)
\(Cl_3CCOOH > Cl_2CHCOOH > ClCH_2COOH > CH_3COOH\)
\(Cl_2CHCOOH > Cl_3CCOOH > ClCH_2COOH > CH_3COOH\)

View Solution

6.
The number of geometrical isomers possible for the complex \([Co(en)_2Cl_2]^+\) is:

\(1\)
\(2\)
\(3\)
\(4\)

View Solution

CUET 2026 Chemistry May 18 Shift 1 Question Paper- Download Answer Key and Solution PDF

CUET 2026 Chemistry May 18 Shift 1 Question Paper with Solution PDF

CUET UG 2026 Exam Pattern

CUET UG 2026 Question Paper Analysis

CUET Questions

1.
The number of stereoisomers possible for the compound \(CH_3CH(OH)CH(OH)CH_3\) is:

2.
A first-order reaction has a half-life of 20 minutes. The time required for \(87.5%\) completion of the reaction is:

3.
The standard Gibbs energy for the reaction is \(-212.27\,\mathrm{kJ\,mol^{-1}}\). \[ Zn(s)+Cu^{2+}(aq.) \rightarrow Zn^{2+}(aq.)+Cu(s) \] The standard electrode potential \((E^\circ_{\text{cell}})\) for the Daniell cell is:

4.
Match Reaction with Reagent Required:
Choose the correct answer from the options given below:

5.
The correct order of acidic strength is: \[ CH_3COOH,\quad ClCH_2COOH,\quad Cl_2CHCOOH,\quad Cl_3CCOOH \]

6.
The number of geometrical isomers possible for the complex \([Co(en)_2Cl_2]^+\) is:

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CUET 2026 Chemistry May 18 Shift 1 Question Paper with Solution PDF

CUET UG 2026 Exam Pattern

CUET UG 2026 Question Paper Analysis

CUET Questions

1.The number of stereoisomers possible for the compound \(CH_3CH(OH)CH(OH)CH_3\) is:

2.A first-order reaction has a half-life of 20 minutes. The time required for \(87.5%\) completion of the reaction is:

3.The standard Gibbs energy for the reaction is \(-212.27\,\mathrm{kJ\,mol^{-1}}\). \[ Zn(s)+Cu^{2+}(aq.) \rightarrow Zn^{2+}(aq.)+Cu(s) \] The standard electrode potential \((E^\circ_{\text{cell}})\) for the Daniell cell is:

4.Match Reaction with Reagent Required: Choose the correct answer from the options given below:

5.The correct order of acidic strength is: \[ CH_3COOH,\quad ClCH_2COOH,\quad Cl_2CHCOOH,\quad Cl_3CCOOH \]

6.The number of geometrical isomers possible for the complex \([Co(en)_2Cl_2]^+\) is:

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1.
The number of stereoisomers possible for the compound \(CH_3CH(OH)CH(OH)CH_3\) is:

2.
A first-order reaction has a half-life of 20 minutes. The time required for \(87.5%\) completion of the reaction is:

3.
The standard Gibbs energy for the reaction is \(-212.27\,\mathrm{kJ\,mol^{-1}}\). \[ Zn(s)+Cu^{2+}(aq.) \rightarrow Zn^{2+}(aq.)+Cu(s) \] The standard electrode potential \((E^\circ_{\text{cell}})\) for the Daniell cell is:

4.
Match Reaction with Reagent Required:
Choose the correct answer from the options given below:

5.
The correct order of acidic strength is: \[ CH_3COOH,\quad ClCH_2COOH,\quad Cl_2CHCOOH,\quad Cl_3CCOOH \]

6.
The number of geometrical isomers possible for the complex \([Co(en)_2Cl_2]^+\) is: